Audio Project Amplifier Speaker Loudspeaker Kit
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Rumble in a song making my woofers move stupidly - Click HERE for Original Thread
bigwill
I was listening to a song and I noticed that my woofers were moving oddly - as in, moving in and out in the order of about 2 or 3Hz, roughly in time with the music. This was from an mp3. They sounded fine, they weren't bottoming out or distorting, although this concerned me so I turned off the song. Were my woofers enduring huge amounts of power for no reason? Was the actual amplitude of the rumble low but causing my woofers to excurt quite a lot due to its very low frequency? I'm really worried that their voice coils got unessecarily hot and somehow got damaged. I wasn't even listening at particularly high levels.

BTW The song in question was Michael Jackson - Don't stop 'Til You Get Enough
ChesterFuzzin'
get a subsonic filter
richie00boy
The MP3 was recorded by somebody with a vinyl setup, and not a great one at that. Buy the album on CD and encode it yourself :)
bigwill
quote:
Originally posted by richie00boy
The MP3 was recorded by somebody with a vinyl setup, and not a great one at that. Buy the album on CD and encode it yourself :)


It sounded awfully clean for vinyl, but what do I know, I'm too young to have experienced proper records :clown:

Do you think my speakers could have overheated from this? I'm sure they would move more if I put, say, a 3v battery accross their terminals, and that's not an awful lot of power through 8 ohms
richie00boy
No they will be fine. If they are vented speakers the amount of power needed to make them shake like that is peanuts.
bigwill
They're transmission lines luckily :cool:
djQUAN
quote:
Originally posted by bigwill
They're transmission lines luckily :cool:


actually, the same thing happens with TL's as with vented boxes when run below their tuning frequency. :D
richie00boy
Beat me to it dj :)
djQUAN
:D

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